311225411320 has 32 divisors (see below), whose sum is σ = 700276381920. Its totient is φ = 124486750080.

The previous prime is 311225411291. The next prime is 311225411323. The reversal of 311225411320 is 23114522113.

It is a super-2 number, since 2×311225411320² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311225411323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1783150 + ... + 1949890.

It is an arithmetic number, because the mean of its divisors is an integer number (21883636935).

Almost surely, 2^311225411320 is an apocalyptic number.

It is an amenable number.

311225411320 is an abundant number, since it is smaller than the sum of its proper divisors (389050970600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311225411320 is a wasteful number, since it uses less digits than its factorization.

311225411320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213415 (or 213411 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 311225411320 its reverse (23114522113), we get a palindrome (334339933433).

The spelling of 311225411320 in words is "three hundred eleven billion, two hundred twenty-five million, four hundred eleven thousand, three hundred twenty".